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Thermal mass flow meter

About: Thermal mass flow meter is a research topic. Over the lifetime, 1759 publications have been published within this topic receiving 21878 citations.


Papers
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Patent
Robert Gagne1
30 Jan 1984
TL;DR: Pneumatic control of flow patterns in regenerators is improved by the use of flow amplifier nozzles in this paper, which is a technique used in the field of biomedical applications. But this technique is not suitable for regenerators.
Abstract: Pneumatic control of flow patterns in regenerators is improved by the use of flow amplifier nozzles.

17 citations

Patent
15 Dec 2005
TL;DR: In this paper, a volumetric flow sensor and a densiometer are used to measure a mass flow rate of the fuel and a temperature sensor is also located on the circuit chip to provide accurate temperature of fuel to correspond to the fuel density reading.
Abstract: A fuel delivery system uses a volumetric flow sensor and a densiometer to measure a mass flow rate of the fuel. A densiometer may be a coriolis mass flow sensor etched into a small circuit chip. As fuel flows past the densiometer a density of the fuel and characteristic slope as a function of temperature is determined. At least one temperature sensor is also located on the circuit chip to provide accurate temperature of the fuel to correspond to the fuel density reading. Piezoelectric crystals in the volumetric flow sensor generate and receive a sound wave. By analyzing the sound wave signals the volumetric flow rate of fluid through the volumetric flow sensor can be calculated. At least one temperature sensor is also placed on the volumetric flow sensor to correct for any thermal expansion of an inner diameter of the volumetric flow sensor and for final mass flow calculation. The density and temperature information from the densiometer and the volumetric flow and temperature information from the volumetric flow sensor are used to determine the density of the fuel at the volumetric flow sensor. By using the density calculated at the volumetric flow sensor and using the volumetric flow information an accurate mass flow rate of the fuel at the volumetric flow sensor can be calculated.

17 citations

Journal ArticleDOI
TL;DR: In this paper, the concept of an orifice meter whose performance is independent of the inlet conditions by the introduction of a standard swirl before the meter is described, and a proposal for a new calibration equation is also made for the particular swirler employed.

17 citations

Patent
09 Sep 2008
TL;DR: In line magnetic flow meters have an electrically insulated quasi-annular voltage sensing path defined between an internal wall of a meter body and an outer wall of an axially disposed hollow tube as mentioned in this paper.
Abstract: An in-line magnetic flow meter has an electrically insulated quasi-annular voltage sensing path defined between an internal wall of a meter body and an outer wall of an axially disposed hollow tube. Although less than 100% of the fluid flow passes through the sensing region, the choice of an inner tube reduces flow impedance introduced by the meter, when compared to other meters providing a quasi-annular sensing path. In addition, by forming two electromagnet coils on a single core and using axially separated pairs of electrodes, the present arrangement allows one to provide two flow meters in the space normally occupied by one.

17 citations

Patent
04 Mar 1997
TL;DR: In this paper, a noncontact solids flow meter for measuring solid particulate flow is comprised of a flow tube, a sensor, and an indicator, which is placed in a sensor tube at an angle to the flow of particulate solids.
Abstract: A non-contact solids flow meter for measuring solid particulate flow is comprised of a flow tube, a sensor, and an indicator. The product enters the flow tube at one end and flows downward by gravity past the sensor and then exits the flow tube at the bottom. The sensor is placed in a sensor tube at an angle to the flow of particulate solids. As the product passes the sensor signal (low microwave energy), this energy upon contacting the particulates undergoes a Doppler shift which is detected by the sensor. The width of the sensor beam has to be at least the diameter of the flow tube so that it covers the entire cross-sectional area of the flow tube. In this manner, all particulate materials flowing through the flow tube come in contact with the beam and are thus reflected. The instrument is calibrated and algorithms determined from the calibration to cause the indicator to provide a best fit function over the output range of the indicator.

17 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202312
202226
20212
20208
20194
201811